NJW1195A
4-Channel Electronic Volume with Input Selector
GENERAL DESCRIPTION
The
NJW1195A
is a 4-channel electronic volume with
4-in 2-out stereo audio selector. It performs low noise and
low distortion characteristics with resistance ladder circuit.
The
NJW1195A
is also available for 2-channel differential
transmission electronic volume with 2-in 1-out stereo audio
selector by a differential transmission select function.
All of functions are controlled via three-wired serial bus.
Selectable 4-Chip address is available for using four chips
on same serial bus line.
It’s suitable for two-channel stereo system and or
multi-channel audio system.
At the volume attenuated, the
NJW1195A
improves low
distortion compared with NJW1195. Furthermore, the
NJW1195A
supports both single power supply operation
and dual power supply operation.
FEATURES
Operating Voltage
3-Wired Serial Control
Selectable 4-Chip Address
Low Output Noise
Low Distortion
4in 2out Stereo Signal Selector
Volume
Differential transmission select function
Channel Separation
Zero Cross Detection
Bi-CMOS Technology
Package Outline
BLOCK DIAGRAM
In B1
In B2
In B3
In B4
Out1 B
Out2 B
V+
ADR1
ADR0
+
PACKAGE OUTLINE
NJW1195AV
Dual power supply : ±3.5 to ±7.5V
Single power supply : +7.0 to +15V
Chip Address Select Function
Available for using four chips on same serial bus line
-118dBV typ. (1.26Vrms typ.)
0.0003% typ. at Vin=1Vrms (Differential transmission)
+31.5 to
–95dB
/ 0.5dB step, Mute
-120dB typ.
SSOP32
V-
DIFF
100F
+
10F
+
10F
+
10F
+
10F
+
100F
+
10F
+
10F
+
+
100F
100F
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
Ref 5V
VDD
17
+31.5dB to -95dB
/ 0.5dBstep, Mute
VOL1B
+31.5dB to -95dB
/ 0.5dBstep, Mute
VOL2B
SEL1B
SEL1A
SEL2B
SEL2A
VOL2A
+31.5dB to -95dB
/ 0.5dBs tep, Mute
Zero Cross
Detection
VOL1A
+31.5dB to -95dB
/ 0.5dBstep, Mute
Control Logic
1
10F
+
2
10F
+
3
10F
+
4
10F
+
5
100F
6
+
7
10F
8
+
9
100F
10
10
+
11
11
12
12
10F
+
13
13
+
14
15
16
V-
In A1
In A2
In A3
In A4
Out1 A
D_REF
Out2 A
DATA
CLOCK
LATCH
Ver 0.4E
–
1
–
NJW1195A
PIN FUNCTION
32
17
1
16
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
SYMBOL
InA1
InA2
InA3
InA4
A_REF
DCCAP_1A
A_REF
Out1A
A_REF
DCCAP_2A
D_REF
Out2A
VDDOUT
DATA
CLOCK
LATCH
Ach Input 1
Ach Input 2
Ach Input 3
Ach Input 4
FUNCTION
No.
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
SYMBOL
V-
V+
ADR0
ADR1
Out2B
DIFF
DCCAP_2B
B_REF
Out1B
B_REF
DCCAP_1B
B_REF
InB4
InB3
InB2
InB1
FUNCTION
Power Supply (-)
Power Supply (+)
Chip address setting terminal 0
Chip address setting terminal 1
Bch 2 Output
Differential
transmission
select
terminal
Switching noise rejection capacitor
(Bch 2)
Bch Reference terminal
Bch 1 Output
Bch Reference terminal
Switching noise rejection capacitor
(Bch 1)
Bch Reference terminal
Bch Input 4
Bch Input 3
Bch Input 2
Bch Input 1
Ach Reference terminal
Switching noise rejection capacitor
(Ach 1)
Ach Reference terminal
Ach 1 Output
Ach Reference terminal
Switching noise rejection capacitor
(Ach 2)
Digital block Reference Voltage
Ach 2 Output
Internal Digital Power Supply output
Control data signal input
Clock signal input
Latch signal input
–
2
–
Ver 0.4E
NJW1195A
ABSOLUTE MAXIMUM RATING (Ta=25C)
PARAMETER
SYMBOL
Power Supply Voltage
Maximum Input Voltage
Power Dissipation
Operating Temperature Range
Storage Temperature Range
V
+
/V
-
V
IM
P
D
Topr
Tstg
RATING
+8/-8
V
+
/V
-
800
NOTE: EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layer, FR-4) mounting
UNIT
V
V
mW
C
C
-40
~
+85
-40
~
+125
ELECTRICAL CHARACTERISTICS
(Ta=25C, V
+
/V
-
=7V, RL=47k, VOL=0dB)
PARAMETER
Power Supply
Operating Voltage
Supply Current 1
Supply Current 2
V
+
/V
-
I
CC
I
EE
No signal
No signal
±3.5
-
-
±7.0
9
9
±7.5
15
15
V
mA
mA
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
Input/Output Characteristics (Output)
Maximum Output Voltage
Voltage Gain 1
Voltage Gain 2
Voltage Gain Error 1
Voltage Gain Error 2
Maximum Attenuation
Mute level
Cross Talk 1
Cross Talk 2
V
OM
G
V1
G
V2
G
V1
G
V2
A
TT
Mute
CT1
CT2
f=1kHz,THD=1%
VOL=0dB
V
IN
=2Vrms, f=1kHz
VOL=0dB
V
IN
=100mVrms, f=1kHz
VOL=+15dB
V
IN
=2Vrms, f=1kHz
VOL=0dB
f=1kHz, V
IN
=2Vrms
VOL=-60dB
f=1kHz, V
IN
=2Vrms
VOL=-95dB, A-weight
f=1kHz, V
IN
=2Vrms
VOL=Mute, A-weight
f=1kHz, V
IN
=2Vrms,A-weight
VOL=0dB, Rg=0
f=20kHz, V
IN
=2Vrms
VOL=0dB, Rg=0
f=1kHz, V
IN
=2Vrms,A-weight
VOL=0dB, Rg=0
Out1 vs. Out2
f=20kHz, V
IN
=2Vrms
VOL=0dB, Rg=0
Out1 vs. Out2
f=1kHz, V
IN
=2Vrms,A-weight
VOL=0dB, Rg=0
Out A vs. Out B
f=20kHz, V
IN
=2Vrms
VOL=0dB, Rg=0
Out A vs. Out B
3.6
-0.5
+14
-0.5
-1.0
-
-
-
-
4.2
0
+15
0
0
-95
-120
-120
-100
-
0.5
+16
0.5
1.0
-
-
-
-
Vrms
dB
dB
dB
dB
dB
dB
dB
dB
Channel Separation 1
CS1
-
-120
-90
dB
Channel Separation 2
CS2
-
-100
-
dB
Channel Separation 3
CS3
-
-120
-90
dB
Channel Separation 4
Input Impedance *
CS4
R
IN
-
12.0
-100
16.7
-
-
dB
kΩ
Select Channel Input
Terminal
* Input Impedance is reduced by half (9.1kΩ typ.) when input selector 1 (SEL1) and input selector 2 (SEL2) chose the same input.
Ver 0.4E
–
3
–
NJW1195A
ELECTRICAL CHARACTERISTICS
(Ta=25C, V
+
/V
-
=7V, RL=47k, Volume=0dB)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
Input/Output Characteristics (Output)
Output Noise1
Output Noise2
Total Harmonic Distortion 1
Total Harmonic Distortion 2
Total Harmonic Distortion 3
Total Harmonic Distortion 4
Total Harmonic Distortion 5
Total Harmonic Distortion 6
Total Harmonic Distortion 7
Total Harmonic Distortion 8
V
NO1
V
NO2
T.H.D.1
T.H.D.2
T.H.D.3
T.H.D.4
T.H.D.5
T.H.D.6
T.H.D.7
T.H.D.8
Volume=0dB,
Rg=0, A-weight
Volume=-95dB,
Rg=0, A-weight
f=1kHz,V
IN
=200mVrms,Volume=0dB,
BW=400Hz-30kHz
f=10kHz, V
IN
=200mVrms,Volume=0dB,
BW=400Hz -30kHz
f=1kHz, V
IN
=2Vrms,Volume=0dB,
BW=400Hz -30kHz
f=10kHz, V
IN
=2Vrms,Volume=0dB,
BW=400Hz-30kHz
f=1kHz, V
IN
=200mVrms,
Volume=+15dB, BW=400Hz-30kHz
f=10kHz, V
IN
=200mVrms,
Volume=+15dB, BW=400Hz-30kHz
f=1kHz, V
IN
=2Vrms, Volume=-24dB,
BW=400Hz-30kHz
f=10kHz, V
IN
=2Vrms, Volume=-24dB,
BW=400Hz-30kHz
f=1kHz, V
IN
=1Vrms,Volume=0dB,
-
-
-
-
-
-
-
-
-
-
-118
(1.26)
-118
(1.26)
0.001
0.001
0.001
0.001
0.001
0.0015
0.003
0.003
-100
(10)
-
-
-
-
-
-
-
0.01
-
dBV
(Vrms)
dBV
(Vrms)
%
%
%
%
%
%
%
%
Total Harmonic Distortion 9
T.H.D.9
BW=400Hz-30kHz,
Differential transmission
f=10kHz, V
IN
=1Vrms,Volume=0dB,
-
0.0003
-
%
Total Harmonic Distortion 10
T.H.D.10
BW=400Hz-30kHz,
Differential transmission
-
0.0003
-
%
Logic
Control Characteristics
High Level Input Voltage
Low Level Input Voltage
V
IH
V
IL
DATA, CLOCK, LATCH, ADR0,
ADR1, DIFF
Terminal Input
DATA, CLOCK, LATCH, ADR0,
ADR1, DIFF
Terminal Input
2.5
0
-
-
V
+
V
V
1.5
–
4
–
Ver 0.4E
NJW1195A
TERMINAL DESCRIPTION
Terminal
1
2
3
4
29
30
31
32
SYMBOL
InA1
InA2
InA3
InA4
InB4
InB3
InB2
InB1
FUNCTION
Ach Input 1
Ach Input 2
Ach Input 3
Ach Input 4
Bch Input 4
Bch Input 3
Bch Input 2
Bch Input 1
EQUIVALENT CIRCUIT
VOLTAGE
V+
0V
100kΩ
V-(sub)
A_VREF
B_VREF
20kΩ
V+
5
7
9
11
24
26
28
A_REF
A_REF
A_REF
B_REF
B_REF
B_REF
Ach Reference terminal
Bch Reference terminal
0V
V-(sub)
6
10
23
27
DCCAP_1A
DCCAP_2A
DCCAP_2B
DCCAP_1B
Switching noise rejection
capacitor (Ach 1)
Switching noise rejection
capacitor (Ach 2)
Switching noise rejection
capacitor (Bch 2)
Switching noise rejection
capacitor (Bch 1)
V+
50Ω
V+
10kΩ
50Ω
V-(sub)
0V
V+
50Ω
V+
8
12
21
25
Out1A
Out2A
Out2B
Out1B
Ach 1 Output
Ach 2 Output
Bch 2 Output
Bch 1 Output
V-(sub)
50Ω
200Ω
Ver 0.4E
–
5
–
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